Fenugreek As A Cover Crop

Fenugreek has been recommended to be as a nitrogen-gathering plant, but
I cannot find information as to the amount of nitrogen it gathers in its
roots and tops, nor the amount of crop per acre.

Fenugreek is a good nitrogen gatherer and is desirable for green
manuring wherever you can get a good growth of the plant. You can count
it worth as much as peas, vetches, etc., if you can get as much growth
of the plant. It is most largely used in the lemon district near Santa
Paula. The best way to proceed would be to try a small area of all the
nitrogen gathering plants of which you can get the seed easily, and
determine by your own observation which makes the best growth under your
conditions.